Essays on Mercury

A dental cavity in a tooth is the result of the decay process that happens over time when bacteria in the mouth produce acids. In a time, acids can dissolve enamel and cause a hole, which is known as a cavity. Unlike some other injuries, a cavity will not heal by itself and needs to be filled. Several different materials are available, and each material has advantages and disadvantages.
Dental fillings can be categorized as direct or indirect restorations. Direct restorations are fillings that get inserted into a cavity in a single visit. These substances include consisting of amalgams, Continue reading...

Introduction

The object of the paper is to analyze the above relationship over a range of pressures extending above and below atmospheric pressure.
Data were obtained for the pressure and temperature of a saturated steam-water mixture in equilibrium over a wide range of pressures and temperatures. The “raw” experimental data are given at the end of this document and the apparatus used are described below.

The object of this exercise is to:

a) Use the raw data to produce a table of absolute pressure .v. absolute (thermodynamic) saturation temperature over the whole range of the data provided.
b) Compare this data to equivalent data taken from steam Continue reading...

Aim of the experiment

Apparatus
Spectrometer, sodium vapor lamp, mercury vapor lamp, watch maker eye glass and small flash lights.
Abstract
This is the phenomenon where atoms are excited and emit light of various wavelengths. These lines which are colored with dark fringes between them are known as atomic spectra. All elements have distinct set of spectral lines. It is this unique spectrum associated with certain distinct element. The atomic spectra of various elements of investigation will be studied in this experiment using a diffraction grating mounted on a spectrometer. The atomic transitions of various elements under investigation will be used to calibrate Continue reading...

Introduction

At the centre of the solar system is the Sun. The nearest four planets are Mercury, Venus, Earth and Mars these are terrestrial and rocky worlds. The next four are Jupiter, Saturn, Uranus and Neptune these are gas giants. Between the orbits of Jupiter and Mars lies an asteroid belt that includes the dwarf planet of Ceres. After the orbit of Neptune, a disk shaped Kupiter belt exists where the dwarf planet Pluto exists and further beyond that there is a giant spherical Oort Cloud and the heliopause that is teardrop shaped (Choi).

History and Discovery

Many ancient astronomers thought that the Continue reading...

A Growing Concern in Today's EnvironmentThe article Electronic Waste: A Growing concern in Today’s Environment starts by showing stating how, there has been major developments observed in the sphere technology improvement and production over the years. As a result, the scale of electronics market has become wider and wider and spins up from day to day. According to Consumer Electronic Association, consumers purchased 800 million units of consumer electronics in 2012 "in the United States". Households in US spends approximately $1506 per year on hardware alone. Accordingly, there to improve on the efficiencies of their products in order Continue reading...

The problem is to test, based on the level of mercury, whether the two batches, X and Y, originated from the same catch. The statistical method used to perform this kind of test is the Mann-Whitney U-test.
Mann-Whitney U-test is used to compare whether two independent samples have been drawn from a population with the same characteristics. And it is used only when there are two samples to compare. In case there are two independent samples, Kruskal-Wallis test is used to investigate whether the samples were drawn from the population with similar characteristics.

The following steps would be followed when doing a Mann-Whitney u-test:

- Levels of mercury content in Continue reading...

The relevant stakeholders described in the articles is composed of the corporations such as Newmont Mining and the other companies involved in the mining operations. However, the most affected and considerably the important stakeholders in the case are the residents of the communities near the Yanacocha mine, and town of Choropampa. Peru’s mining history was shrouded with allegations of environmental negligence due to the issues of mercury spill that affected the nearby areas of Newmont mining site. What makes the corporations involved as stakeholders is that the company has the highest business interest in the issue given that Continue reading...

Gods and goddesses play a huge part in The Odyssey, which retells the story of a ten-year journey of Ulysses from Troy to Ithaca. The story of Ulysses’ voyage has a lot of intercession from the gods and goddesses, which either aided or hindered the men of Ulysses in going back to their home. There is a great deal of interaction between the gods and the mortals in this well-known epic. It also showed some human characteristics that may have been reflected by the gods.
Gods are there to assist or to deter the mission of the people in Continue reading...

A telescope is a device that makes it possible to view distant and faint objects as though they were near (Telescope, 2009). The discovery of the telescope and subsequent improvement in technology has gone a long way to transforming the way we view the universe. Telescope helps in viewing distant planets, stars, and heavenly bodies. To understand the mechanisms of operation of a radio telescope, it is important to initiate by taking a look at its discovery as well as the events that potentially led to the discovery. The essay will take a look at how the discovery and Continue reading...

Part 1

Al Musilli was amazed by the entire silver production process. In his article, Al Musili describes the whole silver mining process. He begins by identifying the 37 mills that were used in the grinding of stones that bore silver both during the night and during the day. After the grinding process was over, quantities of approximately 5000 lbs were taken and piled together to form several piles. Water was then added to each pile and mercury was added later to it based on its needs. Shovels were then used in stirring the mixture and mercury-added when necessary. Moreover, if Continue reading...

Adultery remains the charged topic today that it was back in ancient times. Even though the twentieth century brought it more liberal means for gaining a divorce, and even though cohabitation is catching up with marriage as the relationship structure of choice for many couples, particularly in Europe, the idea that a spouse is cheating on his or her betrothed is still the sort of alluring gossip that draws interest. If this were not true, such spurious stories as Michelle Obama’s plans to divorce the president and Angelina Jolie’s latest decision to leave Brad Pitt would not Continue reading...

The case study analyzes the acquisition of mercury footwear by the Active Gear Inc from the West Coast Fashions. The active Gear Inc had contemplated that the acquisition would double its revenue, expand its operations through opening of both distributors and retailer shops and increasing the company’s leverage with the manufacturers. But the firm faced a lot of threats than opportunities following the acquisition.

Problem Statement:

The Active has been faced with an increased competition from other large footwear manufacturers globally. This has resulted into competitive disadvantage especially from the Chinese contracted manufacturers. In the three years that followed the Continue reading...

Introduction

Emission of the toxic substance by industries is common all over the world. Toxic substances are emitted daily by industries and anthropogenic activities. Toxic substances are categorized into three categories namely organic, inorganic and metallic compounds. Examples of organic, inorganic and metallic compounds are methane, sulfate and mercury respectively. There have been reports of these substances having negative effects on the environment. Substances like methane are responsible for increased atmospheric temperature. Sulfates affect soil. Sulfates combine with atmospheric water to form acid water. Acid water has a negative effect of soil and microorganism living in it. Mercury, on the Continue reading...

Electronic devices may be deemed the crowning achievement of decades-long scientific efforts in their own right, signifying the human quest for ultimate comfort. People are so used to utilizing electronic devices in their everyday activities that they seem to have become inseparable from their life. Of course, there is no denying they do a lot to facilitate human lives by connecting people, updating on the latest news, revealing weather broadcast, allowing watching movies, to name only a number of benefits. While used by many, electronic gadgets do not necessarily mean they pose no threat to human health. One should Continue reading...

- Introduction
This research paper focuses on emerging technologies that promote sustainable computing systems. According to Bhattacharya, Govindan & Sankar (2013), sustainable computing encompasses the design, manufacture, use and disposal of computers and its subsystems (monitors, networking devices, printers, communication devices and storage devices) efficiently without interfering with the environment. Contemporary computing systems such as HPC (High Performance Computing Clusters) and Data centers face the challenge of high cooling and power costs. Gupta, Mukherjee & Banerjee (2011) state that the high consumption of power is a concern because it impacts on the cost, environment, reliability and scalability of the computing systems. Continue reading...

Introduction

One of the byproducts of urban growth and development is the waste production. As per the report of the World Bank (2013), OECD countries produce almost half of the world's waste, while South Asia and Africa are listed as the regions producing the least amount of waste. The Basel Convention defines 'wastes' as substances or objects that need to be disposed of in accordance with the provisions of national law. European Waste Catalogue shows 850 types of wastes out of which 420 types of wastes have been classified as hazardous waste. Hazardous wastes are those wastes considered to be Continue reading...

Water Supplies in Sun Valley, AZ

Sun Valley is located in Arizona. It is situated along interstate 40. It is 31.56 square miles. Sun Valley has different water supply options. Some of these options are groundwater, surface water and reclaimed water. Groundwater is water found beneath the ground. They are usually in rocks and pores of the soil. Sun Valley is supplied by Arizona’s water supply. Groundwaters that supply Sun Valley are aquifers and wells. Main aquifers in Arizona are stream alluvial and basins fill. Ground water can also be sourced from sedimentary rock. Basin Fills are of three type’s namely carefree formation, Continue reading...

[Author]
Human society has reached a certain level of development that everybody enjoys especially in the Western countries like the United States of America. For the convenience of human beings, people invented how to generate electricity, domesticate livestock in a large scale manner, and mass produce food. Because of these inventions, food has become more accessible to people, more technologies are invented for transportation, communication and many other essentials for communities. However, the basic element of the earth that is giving life to all creatures is at stake. The bodies of water started to be threatened by the massive Continue reading...

- The Role of the Doppler effect in determining the rotation rates of both Mercury and Venus
The Doppler Effect describes how waves of any kind move, depending on the direction the source of the waves is moving in and the position of the observer. For example, in the diagram below, the two individuals perceive the siren’s noise differently depending on the length of the wavelength and degree of the frequency, premised on where each person is standing.
Source: http://www.physicsclassroom.com
The rotational rate of Mercury cannot be determined through optical observation since the planet is comparatively small and is Continue reading...

Answers to Questions

Block 1: Problems, Challenges and Opportunities (Parts 1 and 2)
T207 Engineering: Mechanics, Materials, Design
Answer 1(a)
The three categories of Engineering Solutions are Innovation by Context, Innovation by Development and finally Routine Solutions. Innovation by Context will have inventions in their ranks, which relies on a new technology to bring about a solution to a problem. The ball point pen(deviating away from the liquid ink), the Gore-Tex® Fabric which is not a fabric but layers of artificial organic material making it breathable, waterproof one-way,durable,etc. and the Dyson™ Vacuum Cleaner which uses cyclonic vacuum technology Continue reading...

Introduction

Astrology is a name that comes from Greek words logos (study or science) and astron (stars). As such, astrology is a science or study of stars. The word differs from astronomy in that astrology studies the correlations between celestial events and humanly meaningful events (Lewis, 2003). The American Federation of Astrologers, as well as numerous other bodies, have credited the Babylonians with the birth of astrology, dating as far back as 1645BC (astrology.com). Scientific and technological advances have revolutionized human life and provided answers and solutions to many mysteries. Astrology has ceased to have a strong hold on religious Continue reading...

1- The chapter opens with these words: “ Neeru, shouei, maima, aqua. In any language, water is the most abundant compound on the surface of the Earth.”
- Explain the term compound and also why water is not an element.
Answer: Compound is a chemical entity made from combination of two or more different elements. These elements lose their individual identities when they combine to form a compound and possess unique properties subjected to that compound. Water is made from two molecules of hydrogen and one molecule of oxygen. Hydrogen and oxygen individually are elements but when combined in the Continue reading...

Gold is and has always been a treasured metal at the center of power struggles, and its mining has a bloody history. The foundation of Rome through the gold unearthed at Gaul, Spain and the subsequent discovery, and Gold Rush in America are examples of the lure of gold and the benefits it presents to its miners. Even the recent example of the World Bank is very important in this regard. The international Bank protects its investments by pouring billions of dollars in gold mines across the globe while the labor laws continue to be poorly implemented. Pratap Chatterjee Continue reading...

Introduction:

The modern United States economy relies on fossil fuels for up to 82% of the overall energy supply. This energy supports industrial processes, commercial and residential, and transportation purposes. Oil accounts for 34% of the overall energy demand, coal accounts for 39%, natural gas represents 27%, hydropower accounts for 7%, while nuclear energy accounts for 19% (United States Energy Department, 33). However, in terms of net energy consumption, fossil fuels accounted for 67.5% while other energy sources; that is, nuclear and other renewable energy sources, such as hydro-power and wind-energy accounted for 32.5% in 2013 (United States Energy Department, Continue reading...

(Author’s Full Name)

Should it be enforced?
Introduction
In 1963, measles virus affected over three million families in the United States. The virus killed over 500 people and infected over 48000. When the vaccination for measles was first introduced, the outbreak dropped considerably to the point that measles was virtually eliminated on a global scale. However, during the recent years, a surge in measles outbreak has been observed across the states of Indiana and New York City. . The medical community is scrambling to take precautionary measures to reduce the epidemic, through vaccinations. This raises an important question: Should Continue reading...

There are three main causes of stockpiling gold. People, countries and institutions may stockpile gold for future profit or investments in the future, for security in terms of emergency funds and lastly to back the economy during a crisis. These three main causes of gold stockpiling are the reasons behind the intention by many people to maintain stocks of gold each of them are discussed in detail as below;
First, stockpiling of gold is meant for investment. In this regard people, institutions and governments anticipate making future profits from the appreciation of the value of gold. According to Beechy Continue reading...

Integrated case analysis

Introduction
Strategic management refers to the ability of managers to execute a collection of strategic policies in order to outsmart their rivals in the regional and global market. It is an intellectual approach by the management where they review their current performance and devise strategies to improve on effectiveness and profitability to seize competitive advantage over their rivals. Ford motor company has had a series of ups and downs in the automotive industry due to advanced technology and increased competition. The situation has prompted the management to review its strategic plan with intent to regain its market share and Continue reading...

There are a small number of extremely significant archaeological discoveries that were made by chance without scientists’ intentional efforts and search. Among such exceptional finding are the Rosetta Stone, the Dead Sea Scrolls, and the Terracotta Army, which is situated in the Mausoleum of the First Qin Emperor Qinshihuang. The significance of the latter has been recognized by the United Nations Educational, Scientific and Cultural Organization (UNESCO) in 1987 by way of being inscribed in the World Heritage List as one of the World Heritage Sites to be specifically preserved and safeguarded by the Chinese government, a home for Continue reading...

1. Ecosystems.
(10 pts) Provide a review of the process of succession and trends in biodiversity, productivity, and nutrient cycling.
Ecological succession refers to the process of gradual change of the ecosystems. This is attributed to the fact that habitats do not remain constant and they keep changing over time. Succession is divided into two; there is primary succession and secondary succession. Primary succession refers to changes which occur on an environment that has never been colonized before, for instance, quarrying on land that has never been quarried before. Secondary succession on the other hand involves environmental disturbance on Continue reading...

`Date:

Introduction

Cosmetic products are commercial beauty products manufactured and marketed for the use of improving the appearance of an individual. They can be used to enhance the skin colour, the odour of a person, the lustre and hair. These products include makeup powders, hair creams and gels. Most commercial cosmetic products are synthetic. However, some are naturally sourced. They are meant to improve the appearance of a person without having any effect or interference to the normal basic bodily functions. However, rather than being beneficial to the users, cosmetic products have been found to have serious disadvantages to those Continue reading...

Have you ever heard that a monkey brain is edible? I guess according to current trends everything is almost edible; dogs, cats, tigers. Name all of them. Some are even consuming our ancestors the monkeys. What is wrong? Is it ignorance gone on a rampage, or just a mere discovery that we did not know before? Imagine some people consume monkey brains and they even have descriptions for the delicacy cooked, raw, and flash fried while others still eat it as a snack in the mid-morning. It is such an expensive food. I wonder where these monkeys are sourced Continue reading...

Abstract

Music indeed is the language of the soul. It touches everyone alike. Still people speculate and think that music is for the young. The following discussion is little thought into why it is not age that determines a person’s liking for music but the feelings the music conveys.
Keywords: Rock n Roll, Rock, Queen, Green Day, genre

Introduction

In this far wide world, even the Gods sand divided amongst men. There are only a few things in this world that are shared amongst every one. Music is one amongst those rare things. Every country or region has its own Continue reading...

ENGL2550, Assignment 2b, Section A01

Introduction Increasing public awareness on eco-friendly burials would benefit the world as a whole by preserving nature. An environmentally friendly burial system should be implemented in North America in order to offer a sustainable alternative to traditional burials. In the article “'Til Death Do We Pollute, and Beyond” the authors argue that the best way to ensure human burials are not hazardous to the environment is to “establishment of federal guidelines” that ban the practice of situating cemeteries on sites where there is a risk of contaminating the surrounding area (Guttman, Miller, & Watson, 2013, p. 3). Many environmentally conscious Continue reading...

The James Bay Cree region covers the coast and the drainage systems of Hudson Bay in Canada. It extends from James Bay’s section of Lac Guillaume-Delisle to the Rupert’s Bay. The number of people occupying the area is approximately 12, 000 people. The whole region is under the Quebec government. There are the Coasters (Wiinibeyk Iiyuu) and in land people (Nuuchcimiihc Iiyuu) who are the main occupants of the region. They anciently depended on maritime sea mammals and fur trade for survival respectively. The inland Cree were also small-scale hunters who were in organized groups targeting the Continue reading...

Introduction3

Statistics.3
Offshore oil drilling4
Effects on the environment.7
Recommended solutions10
Conclusion.13

Works Cited14

Abstract
Today, the United States has over 5600 offshore gas and oil platforms; there are also over 27,000 miles of pipeline in the Gulf of Mexico area alone. This shows the extent to which offshore oil drilling occurs in the United States. In other developed parts of the world, the situation is the same. Oil is a product on high demand; this facilitates efforts in extracting it form its deposits deep in the sea floor. The retrieval requires the use of sophisticated equipment and highly-skilled personnel. Offshore Continue reading...

Meissner effect is one of the remarkable properties of superconductors. Most superconductors are metals and metal alloys. However, some non-metals also exhibit superconductive properties hence they are regarded as superconductors. A superconductor refers to a material that can transfer electric current with zero resistance. This implies that when electric current is passed through a superconductor at a temperature below the critical temperature value (Tc), no energy is lost in any form: sound, heat, or light. It is important to point out that superconductivity of a material can only be observed at temperature below the critical temperature (Tc). Critical temperature Continue reading...

ENGLISH 115

11-23-2013
Introduction
Both salty and fresh water take up to seventy-five percent of our planet’s surface. Thus, if polluted, the effects are likely to affect every life form interconnected to the ecosystem. These include humans, plants, marine, and terrestrial wildlife among others. In general, water pollution results from of the emission of organic, toxic, thermal, and non-organic wastes into water bodies. The causes can further take the form of two major levels: point source, and non-point source. Point source pollution targets water pollution agents that flow directly into large water bodies through rivers and streams. On the other Continue reading...

Volcanism refers to the eruption of magma or molten rock, or hot water and steam, including volcanoes, pyroclastic fragments, geysers, as well as fumaroles on top of the surface of a planet (Encyclopedia Britannica 1). A volcano refers to the vent through which gases and magma are discharged. When a planet loses its internal heat it results to volcanism. When a rock that is close to the surface becomes hot sufficiently enough to melt, it results to a volcano being formed.
On the Earth, volcanism often occurs in association with plate boundaries. Where two plates move apart, for instance Continue reading...

Introduction

Senegal is a western African country located 14 degree north of the equator and 17 degree west of the meridian. Senegal owes its name to the Senegal River flowing across the east and north borders of the country. The capital of the country is Dakar. As it was a French colony for a long time the official language of the country is French. Apart from that Wolof, Fula and Serer are the most spoken languages in the country. Senegal has a population of around 12 million. The GDP of the country is $26 billion with a per capita income Continue reading...

Essay Questions

- Give a general objective of the following NASA space program missions, and give details such as who, when, where, how and why. (30 points) this answer should take at least three paragraphs.

Project Mercury started in 1958 and it came to completion in 1963. This was the first program that man landed in space. The program made six flights from 1961 to 1963. The objectives of the mission included: to investigate the ability of man to function in the space, to ensure that both the man and the spacecraft came back safely and to make the spacecraft orbit Continue reading...